Re: Still not too late
As well as Bulkheads they would need a few thousand kettles to raise the steam. BIg Lizzie is Diesel electric.
Which is also why the electric catapult launch was tricky, The new US super carriers have massive amounts of nuclear electric generation on board, They were designed from day one to be fighting power stations that could have upgrades loaded onto the hulls over the years.
Lizzie would need a bigger battery or a very long extension lead back to blighty. Maybe in the Men in Sheds brigade could come up with a supecapacitor system it might work.